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: 2026-10-08 17:02:35 Functions: 96.7 % 121 117 Legend: Lines:     hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	297215
RgX_Graeffe	14
RgX_gtofp_bit	7056133
RgX_normalize1	36408
X2XP1	6001301
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	48669
ZX_rescale2prim	2237782
ZX_sturm	6395
ZX_sturm_i	123562
ZX_sturm_irred	117167
ZX_sturmpart	1129050
ZX_to_ZiX	16455524
ZiX_sqr	99347898
_gen_nored	11267932
_gen_one	14524606
_gen_zero	326083
_intervalcmp	0
_mp_add	24942089
_mp_cmul	35116696
_mp_mul	4430508
_mp_sqr	6349855
_mp_sub	0
_sqrtnr	22878
a_posteriori_errors	538503
abs_update	8028628
abs_update_r	781168
all_roots	537402
append_clone	1618823
bkeval_single_power	5250345
check_ab	1179681
checkbound	2356492
checkvalidpol	268043
clean_roots	537444
cleanroots	231875
cmp_complex_appr	2249874
conformal_basecase	1407530
conformal_mapping	469137
conformal_pol	1407649
dblexp	6569394
dbllog2	304773792
dft	503712
dual_modulus	1015246
eval_rel_pol	13181544
fft	14225737
fft2	7462
findpower	41063893
fix_roots	538503
fix_roots1	398954
fujiwara_bound	2276772
fujiwara_bound_real	1408258
graeffe	49673949
homothetie	1614948
homothetie2n	9987837
homothetie_gauss	36602761
ind_maxlog2	904890
initdft	998983
isexactpol	240229
isexactscalar	934563
isreal	964408
isvalidcoeff	1235245
logmax_modulus	4461132
logmin_modulus	1618138
logmodulus	608831
logpre_modulus	608831
logradius	495271
lower_bound	41063893
mydbllog2i	227081317
mydbllog2r	58107807
mydbllogr	9574312
mygprec	63982279
mygprec_absolute	4356222
mygprec_special	538503
mygprecrc	215747090
mygprecrc_special	2185096
myshiftic	136509529
myshiftrc	35615586
newton_polygon	5526705
optimize_split	495271
parameters	495271
pol_to_gaussint	17642676
polgraeffe	0
polgraeffe0	14
polmod_to_embed	84
polrootsbound	27807
polrootsbound_i	27800
polsolve	166988
quicktofp	7000117
realroots	50631
refine_F	503712
refine_H	2466384
root_error	1919301
roots	8382
roots_aux	240257
roots_com	240229
rootsdeg0	42
scalepol	4300635
scalepol2n	0
sol_ok	3378
solve_exact_pol	231621
split_0	495643
split_0_1	469509
split_0_2	469509
split_1	469137
split_2	495271
split_complete	1529789
split_fromU	495271
split_pols	166988
splitcauchy	166988
splitpoleval	5250345
tocomplex	1219419
update_radius	495271
usp	1127949

Generated by: LCOV version 2.0-1