Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 94.1 % 1561 1469 Test Date: 2026-11-12 17:03:01 Functions: 96.7 % 121 117 Legend: Lines:     hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	297214
RgX_Graeffe	14
RgX_gtofp_bit	7056147
RgX_normalize1	36406
X2XP1	6001069
ZX_Uspensky	1315150
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15275
ZX_graeffe	5460
ZX_realroots_irred	48670
ZX_rescale2prim	2237677
ZX_sturm	6395
ZX_sturm_i	123562
ZX_sturm_irred	117167
ZX_sturmpart	1129049
ZX_to_ZiX	16455226
ZiX_sqr	99348960
_gen_nored	11268048
_gen_one	14524760
_gen_zero	326083
_intervalcmp	0
_mp_add	24942127
_mp_cmul	35116850
_mp_mul	4430508
_mp_sqr	6349893
_mp_sub	0
_sqrtnr	22878
a_posteriori_errors	538502
abs_update	8028288
abs_update_r	781190
all_roots	537401
append_clone	1618827
bkeval_single_power	5250403
check_ab	1179680
checkbound	2356490
checkvalidpol	268041
clean_roots	537443
cleanroots	231875
cmp_complex_appr	2249832
conformal_basecase	1407548
conformal_mapping	469143
conformal_pol	1407667
dblexp	6569527
dbllog2	304781912
dft	503717
dual_modulus	1015246
eval_rel_pol	13181565
fft	14225519
fft2	7462
findpower	41064468
fix_roots	538502
fix_roots1	398956
fujiwara_bound	2276771
fujiwara_bound_real	1408259
graeffe	49674480
homothetie	1614951
homothetie2n	9987903
homothetie_gauss	36603282
ind_maxlog2	904879
initdft	998995
isexactpol	240229
isexactscalar	934563
isreal	964421
isvalidcoeff	1235239
logmax_modulus	4461186
logmin_modulus	1618157
logmodulus	608836
logpre_modulus	608836
logradius	495278
lower_bound	41064468
mydbllog2i	227087536
mydbllog2r	58109232
mydbllogr	9573981
mygprec	63982529
mygprec_absolute	4356184
mygprec_special	538502
mygprecrc	215744210
mygprecrc_special	2185099
myshiftic	136515627
myshiftrc	35617301
newton_polygon	5526717
optimize_split	495278
parameters	495278
pol_to_gaussint	17642751
polgraeffe	0
polgraeffe0	14
polmod_to_embed	84
polrootsbound	27805
polrootsbound_i	27798
polsolve	166990
quicktofp	7000032
realroots	50631
refine_F	503717
refine_H	2466406
root_error	1919290
roots	8382
roots_aux	240257
roots_com	240229
rootsdeg0	42
scalepol	4300692
scalepol2n	0
sol_ok	3378
solve_exact_pol	231621
split_0	495650
split_0_1	469515
split_0_2	469515
split_1	469143
split_2	495278
split_complete	1529802
split_fromU	495278
split_pols	166990
splitcauchy	166990
splitpoleval	5250403
tocomplex	1219407
update_radius	495278
usp	1127927

Generated by: LCOV version 2.0-1