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) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30465-b757eeabfc) Lines: 1467 1530 95.9 % Date: 2025-08-12 09:23:53 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296372
RgX_gtofp_bit	7031204
RgX_normalize1	35887
X2XP1	5990082
ZX_Uspensky	1313830
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15273
ZX_graeffe	5383
ZX_realroots_irred	48635
ZX_rescale2prim	2233674
ZX_sturm	6395
ZX_sturm_i	123159
ZX_sturm_irred	116764
ZX_sturmpart	1128201
ZX_to_ZiX	16455489
ZiX_sqr	99036482
_gen_nored	11195599
_gen_one	14467681
_gen_zero	326126
_intervalcmp	0
_mp_add	24657211
_mp_cmul	34753011
_mp_mul	4373643
_mp_sqr	6297130
_mp_sub	0
_sqrtnr	22705
a_posteriori_errors	537116
abs_update	8004804
abs_update_r	778661
all_roots	536067
append_clone	1613943
bkeval_single_power	5233937
check_ab	1178828
checkbound	2354786
checkvalidpol	267046
clean_roots	536114
cleanroots	231749
cmp_complex_appr	2238461
conformal_basecase	1403817
conformal_mapping	467903
conformal_pol	1403935
dblexp	6548776
dbllog2	302633607
dft	502340
dual_modulus	1012400
eval_rel_pol	13137608
fft	14159358
fft2	7462
findpower	40954584
fix_roots	537112
fix_roots1	398396
fujiwara_bound	2271590
fujiwara_bound_real	1406836
graeffe	49505596
homothetie	1610019
homothetie2n	9957466
homothetie_gauss	36498232
ind_maxlog2	902614
initdft	996288
isexactpol	239739
isexactscalar	931700
isreal	961855
isvalidcoeff	1230095
logmax_modulus	4450739
logmin_modulus	1614773
logmodulus	606738
logpre_modulus	606735
logradius	493951
lower_bound	40953915
mydbllog2i	226407459
mydbllog2r	56754784
mydbllogr	9546280
mygprec	63753406
mygprec_absolute	4339109
mygprec_special	537118
mygprecrc	215174370
mygprecrc_special	2178404
myshiftic	135796645
myshiftrc	35506733
newton_polygon	5507045
optimize_split	493953
parameters	493952
pol_to_gaussint	17588354
polgraeffe	14
polmod_to_embed	84
polrootsbound	27300
polrootsbound_i	27293
polsolve	166678
quicktofp	6978615
realroots	50627
refine_F	502336
refine_H	2460252
root_error	1912292
roots	8018
roots_aux	239767
roots_com	239739
rootsdeg0	42
scalepol	4289194
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494273
split_0_1	468221
split_0_2	468220
split_1	467903
split_2	493954
split_complete	1525654
split_fromU	493953
split_pols	166673
splitcauchy	166676
splitpoleval	5233936
tocomplex	1213847
update_radius	493953
usp	1125984

Generated by: LCOV version 1.16