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 v2.18.1 lcov report (development 31053-95e3b72995) Lines: 94.1 % 1561 1469 Test Date: 2026-07-24 17:03:07 Functions: 96.7 % 121 117 Legend: Lines:     hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
polgraeffe	0
scalepol2n	0
RgX_Graeffe	14
ZX_Uspensky_equal_yes	14
polgraeffe0	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5460
ZX_sturm	6395
fft2	7462
roots	8382
ZX_deg1root	15274
_sqrtnr	22877
polrootsbound_i	27798
polrootsbound	27805
RgX_normalize1	36406
ZX_realroots_irred	48668
realroots	50627
ZX_sturm_irred	117167
ZX_sturm_i	123562
polsolve	166980
split_pols	166980
splitcauchy	166980
solve_exact_pol	231621
cleanroots	231875
isexactpol	240229
roots_com	240229
roots_aux	240257
checkvalidpol	268041
QX_complex_roots	297211
_gen_zero	326093
fix_roots1	398950
conformal_mapping	469140
split_1	469140
split_0_1	469512
split_0_2	469512
logradius	495268
optimize_split	495268
parameters	495268
split_2	495268
split_fromU	495268
update_radius	495268
split_0	495640
dft	503707
refine_F	503707
all_roots	537398
clean_roots	537440
a_posteriori_errors	538498
fix_roots	538498
mygprec_special	538498
logmodulus	608815
logpre_modulus	608815
abs_update_r	781140
ind_maxlog2	904878
isexactscalar	934563
isreal	964408
initdft	998975
dual_modulus	1015232
usp	1127968
ZX_sturmpart	1129062
check_ab	1179689
tocomplex	1219401
isvalidcoeff	1235239
ZX_Uspensky	1315158
conformal_basecase	1407539
conformal_pol	1407658
fujiwara_bound_real	1408270
split_complete	1529778
homothetie	1614920
logmin_modulus	1618151
append_clone	1618798
root_error	1919273
mygprecrc_special	2185066
ZX_rescale2prim	2237764
cmp_complex_appr	2249817
fujiwara_bound	2276778
checkbound	2356508
refine_H	2465974
scalepol	4300644
mygprec_absolute	4356161
_mp_mul	4430341
logmax_modulus	4461143
bkeval_single_power	5250075
splitpoleval	5250075
newton_polygon	5526557
X2XP1	6001222
_mp_sqr	6349466
dblexp	6569354
quicktofp	7000077
RgX_gtofp_bit	7055948
abs_update	8028364
mydbllogr	9574045
homothetie2n	9987700
_gen_nored	11267310
eval_rel_pol	13181285
fft	14225289
_gen_one	14523829
ZX_to_ZiX	16456983
pol_to_gaussint	17642428
_mp_add	24940824
_mp_cmul	35114881
myshiftrc	35615519
homothetie_gauss	36602869
findpower	41064012
lower_bound	41064012
graeffe	49673800
mydbllog2r	58108454
mygprec	63975823
ZiX_sqr	99347600
myshiftic	136510203
mygprecrc	215731251
mydbllog2i	227083849
dbllog2	304779911

Generated by: LCOV version 2.0-1